Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
clc-learning.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-09-04 18:40:35 UTC · ↺ Refresh
MX Hostnames
- clclearning-de0i.mail.protection.outlook.com
MX Priorities
- clclearning-de0i.mail.protection.outlook.com: 0
A / AAAA Records
- 198.202.211.1 (no PTR)
Mail Server IPs
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 52.101.91.162 ↩ mail-matpr04cu00302.inbound.protection.outlook.com
- 52.101.103.36 ↩ mail-miypr05cu00104.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca21::c ↩ mail-matpr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
- 2a01:111:f403:ca21::8 ↩ mail-matpr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns.ui-global-dns.de hostmaster.1und1.com 2017060158 28800 7200 604800 600
Primary NS (mname)
ns.ui-global-dns.de
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060158
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns.ui-global-dns.biz
ns.ui-global-dns.com
ns.ui-global-dns.org
ns.ui-global-dns.de
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.nl2go.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
9 records- v=verifydomain MS=5134668
- MS=723EBAFE1042D2CD073A5D8C21A62C25A221B6A4
- openai-domain-verification=dv-Wa6iLX0veQX3g8sUIUxAwo81
- openai-domain-verification=dv-o2LBcm0GPjY2lYFGz2TMSGGm
- google-site-verification=2zhDGLimpdP8eE77CvbPNcnWl1yDwyWvDmIv7499Ieg
- SPFv=spf1 include:spf.nl2go.com include:spf.protection.outlook.com ~all
- cisco-ci-domain-verification=cbc296286b871479f1bcb959498d1c7cfe931bcf3ea1b7736934dfd19f60331
- MS=ms56516286
- MS=ms72417288
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site · Customize →
See demo & docs
Deep verification
Full email verification for clc-learning.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits